<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            margin: 0;
        }
        /* 版心布局公共类 */
        .container{
            width: 1200px;
            margin: 0 auto;
        }
        header{
         
            background-color: rgb(201, 247, 195);
        }
        .head{
            background-color: rgb(235, 104, 104);
            height: 50px;
        }
        .hb{
            width: 100px;
            height: 100%;
            background-color: rgb(88, 238, 188);
            outline: 1px solid black;
            float: left;
            margin-right: 50px;
        }
    </style>
</head>
<body>
    <header>
        <div class="head container">
            <div class="hb"></div>
            <div class="hb"></div>
            <div class="hb"></div>
        </div>
    </header>
</body>
</html>